Increase Productivity by Adjusting the Pulse Feature on your TIG welder

Today’s TIG welding guest post comes from Andrew Pfaller of Miller
Electric:

There are proper tools designed for every job to prevent damage and to
increase ease of productivity throughout the task at hand. When you are not
appropriately equipped for a particular job, it can make it very hard to
complete the job successfully.

It can be even more frustrating to have the correct tools, but lack the
knowledge or experience to utilize these tools properly. One particular tool
that comes to mind is the pulse feature on welding machines.

When utilizing the pulse feature on the Miller
Maxstar
® or Dynasty® TIG welders, there are several variables
to adjust that can yield significant benefits.

  • Pulses Per Second [PPS] – This variable is the number of times the
    machine switches from a high to low amperage each second. Often times it is
    referred to as the pulse frequency.
  • Peak Time [Peak t] – Peak Time is the percent of the pulse cycle
    spent in the high or peak amperage
  • Background Amperage [BKGND A] – During the low amperage portion of
    the pulse, this variable sets the amperage as percent or ratio of the peak
    amperage.

A frequency at the lower end of the available spectrum can be used as a
training tool for beginners when they desire to weld thinner materials. Common
settings for this type of application would be:

  • 0.5 Pulses Per Second
  • 40-60 percent Peak Time
  • 25 percent Background Amperage.


The addition of filler material at each higher amperage pulse will help melt
the filler. Having a visual aid denoting when to add the filler material enables
even a novice to achieve the “stacked dimes” appearance. Furthermore, by
reducing the heat input for a portion of the weld, an operator has more
forgiveness to reposition or progress the torch forward.

Adjusting the Pulses Per Second provides the most visible change to the weld
operator. For a majority of applications, a good starting point for the pulse
variables is:

  • 120 Pulses Per Second
  • 40 percent Peak Time
  • 25 percent Background Amperage


By increasing the Pulses Per Second, one should quickly note a tighter arc
cone. Increasing this frequency can result in better directional control, a
smaller weld puddle, and increased penetration. With the proper settings of
these variables, the pulse feature can increase weld quality, weld penetration,
and travel speed – all of which translate into increased productivity.

Weld strong and live long.


Learn more about TIG welders at Baker’s Gas and
Welding

About Today’s Guest Blogger

Andrew Pfaller
Product Manager/Weld Engineer
Miller Electric TIG
Division

Andrew Pfaller is a product manager for the TIG Division at Miller Electric
Mfg. Co.
He was formerly a weld engineer and has a degree in Welding Engineering
Technology from Ferris State University.

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